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Michael Paquier 26876127be Fix more issues with dependency handling at swap phase of REINDEX CONCURRENTLY 
When canceling a REINDEX CONCURRENTLY operation after swapping is done,
a drop of the parent table would leave behind old indexes.  This is a
consequence of 68ac9cf, which fixed the case of pg_depend bloat when
repeating REINDEX CONCURRENTLY on the same relation.

In order to take care of the problem without breaking the previous fix,
this uses a different strategy, possible even with the exiting set of
routines to handle dependency changes.  The dependencies of/on the
new index are additionally switched to the old one, allowing an old
invalid index remaining around because of a cancellation or a failure to
use the dependency links of the concurrently-created index.  This
ensures that dropping any objects the old invalid index depends on also
drops the old index automatically.

Reported-by: Julien Rouhaud
Author: Michael Paquier
Reviewed-by: Julien Rouhaud
Discussion: https://postgr.es/m/20200227080735.l32fqcauy73lon7o@nol
Backpatch-through: 12
2020-03-05 12:50:23 +09:00
config Update config.guess and config.sub 2019-04-27 14:25:00 +02:00
contrib Stop demanding that top xact must be seen before subxact in decoding. 2020-02-19 08:27:15 +05:30
doc Fix the name of the first WAL segment file, in docs. 2020-03-03 12:23:25 +09:00
src Fix more issues with dependency handling at swap phase of REINDEX CONCURRENTLY 2020-03-05 12:50:23 +09:00
.dir-locals.el Make Emacs perl-mode indent more like perltidy. 2019-01-13 11:32:31 -08:00
.gitattributes Add XSL stylesheet to fix up SVG files 2019-06-19 21:26:42 +02:00
.gitignore Support for optimizing and emitting code in LLVM JIT provider. 2018-03-22 11:05:22 -07:00
aclocal.m4 Fix configure's AC_CHECK_DECLS tests to work correctly with clang. 2018-11-19 12:01:47 -05:00
configure Stamp 12.2. 2020-02-10 17:14:51 -05:00
configure.in Stamp 12.2. 2020-02-10 17:14:51 -05:00
COPYRIGHT Update copyrights for 2020 2020-01-01 12:21:45 -05:00
GNUmakefile.in Integrate cpluspluscheck into build system. 2019-05-31 12:36:17 -07:00
HISTORY Change documentation references to PG website to use https: not http: 2017-05-20 21:50:47 -04:00
Makefile Don't unset MAKEFLAGS in non-GNU Makefile. 2019-06-25 09:36:21 +12:00
README Change documentation references to PG website to use https: not http: 2017-05-20 21:50:47 -04:00
README.git Change documentation references to PG website to use https: not http: 2017-05-20 21:50:47 -04:00

README 

PostgreSQL Database Management System
=====================================

This directory contains the source code distribution of the PostgreSQL
database management system.

PostgreSQL is an advanced object-relational database management system
that supports an extended subset of the SQL standard, including
transactions, foreign keys, subqueries, triggers, user-defined types
and functions.  This distribution also contains C language bindings.

PostgreSQL has many language interfaces, many of which are listed here:

	https://www.postgresql.org/download

See the file INSTALL for instructions on how to build and install
PostgreSQL.  That file also lists supported operating systems and
hardware platforms and contains information regarding any other
software packages that are required to build or run the PostgreSQL
system.  Copyright and license information can be found in the
file COPYRIGHT.  A comprehensive documentation set is included in this
distribution; it can be read as described in the installation
instructions.

The latest version of this software may be obtained at
https://www.postgresql.org/download/.  For more information look at our
web site located at https://www.postgresql.org/.